pakrym-oai 71e4c6fa17 Move codex module under session (#18249) ...

## Summary
- rename the core codex module root to session/mod.rs without using
#[path]
- move the codex module directory and tests under core/src/session
- remove session/mod.rs reexports so call sites use explicit child
module paths

## Testing
- cargo test -p codex-core --lib
- cargo check -p codex-core --tests
- just fmt
- just fix -p codex-core
- git diff --check

2026-04-17 16:18:53 +00:00

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codex_core__codex_tests__fork_startup_context_then_first_turn_diff.snap

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